Add Siler v0.6

[leocavalcante]

A project I'm working on. No big deal. But would be nice to have it listed 😄
https://github.com/leocavalcante/siler

[kenjis]

@leocavalcante Thank you.

framework	requests per second	relative	peak memory	relative
siler-0.6	2,488.82	22.3	0.24	1.0
phalcon-2.0	1,773.62	15.9	0.26	1.1
tipsy-0.10	1,398.06	12.5	0.32	1.3
fatfree-3.5	1,005.67	9.0	0.41	1.7
ci-3.0	812.32	7.3	0.42	1.7
laravel-5.3	111.82	1.0	2.51	10.4

[kenjis]

@leocavalcante I updated my benchmarks: https://github.com/kenjis/php-framework-benchmark#hello-world-benchmark

Thank you!

[leocavalcante]

Awesome, thank you!